Jane Street
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Jane Street’s PubMatic PUBM Stock Holding History

Jane Street’s Portfolio PUBM Stock Details PUBM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$323K Buy
39,500
+5,700
+17% +$43.8K ﹤0.01% 9073
2025
Q4 		$300K Buy
33,800
+16,100
+91% +$140K ﹤0.01% 8842
2025
Q3 		$147K Buy
17,700
+3,800
+27% +$38.7K ﹤0.01% 9907
2025
Q2 		$173K Buy
+13,900
New +$147K ﹤0.01% 8650
2024
Q4 		– Sell
-21,900
Closed -$326K – 10325
2024
Q3 		$326K Sell
21,900
-16,300
-43% -$283K ﹤0.01% 7898
2024
Q2 		$776K Buy
38,200
+5,200
+16% +$116K ﹤0.01% 6258
2024
Q1 		$783K Buy
33,000
+1,900
+6% +$34.1K ﹤0.01% 5855
2023
Q4 		$507K Buy
31,100
+14,100
+83% +$205K ﹤0.01% 6731
2023
Q3 		$206K Buy
17,000
+1,700
+11% +$25.9K ﹤0.01% 7587
2023
Q2 		$280K Buy
15,300
+5,200
+51% +$82.7K ﹤0.01% 7241
2023
Q1 		$140K Sell
10,100
-14,000
-58% -$202K ﹤0.01% 8053
2022
Q4 		$309K Sell
24,100
-36,700
-60% -$575K ﹤0.01% 6968
2022
Q3 		$1.01M Sell
60,800
-13,800
-18% -$249K ﹤0.01% 5391
2022
Q2 		$1.19M Sell
74,600
-143,500
-66% -$3.07M ﹤0.01% 5171
2022
Q1 		$5.7M Buy
218,100
+58,300
+36% +$1.49M ﹤0.01% 2826
2021
Q4 		$5.44M Buy
159,800
+75,500
+90% +$2.46M ﹤0.01% 2729
2021
Q3 		$2.22M Buy
84,300
+68,000
+417% +$2.04M ﹤0.01% 4265
2021
Q2 		$637K Buy
+16,300
New +$678K ﹤0.01% 6791

Other funds holding PUBM

GHC
Graham Holdings Company Arlington, Virginia $967M AUM 15.12% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
CP
CenterBook Partners Greenwich, Connecticut $1.86B AUM 24.52% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $23.8B AUM 25.4% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Jane Street's PUBM Position: Q1 2026 in Review

Jane Street increased its PubMatic (PUBM) stake by 1.6% in Q1 2026, buying an estimated $24.8K and bringing the position to 210,000 shares worth $1.72M. The position accounts for ﹤0.01% of the portfolio, ranked #5383.

Jane Street first reported a position in PUBM in Q4 2020 and has held it in 21 quarters since. The position peaked at $2.82M in Q3 2023. 152 funds tracked by Wall St. Rank hold PUBM as of Q1 2026.

  • Jane Street held 210,000 shares of PubMatic worth $1.72M as of Q1 2026.
  • Jane Street bought 3,226 PubMatic shares in Q1 2026, an estimated $24.8K.
  • PubMatic made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #5383 holding.
  • Jane Street first reported a position in PubMatic in Q4 2020 and has held it in 21 quarters since.
  • Jane Street's PubMatic position peaked at $2.82M in Q3 2023.
  • 152 funds tracked by Wall St. Rank held PubMatic as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.